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AD5545 - Analog Devices - 16-/14-Bit DACs

Номер произв AD5545
Описание 16-/14-Bit DACs
Производители Analog Devices
логотип Analog Devices логотип 
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AD5545 Даташит, Описание, Даташиты
Data Sheet
FEATURES
16-bit resolution AD5545
14-bit resolution AD5555
±1 LSB DNL monotonic
±1 LSB INL
2 mA full-scale current ±20%, with VREF = 10 V
0.5 µs settling time
2Q multiplying reference-input 6.9 MHz BW
Zero or midscale power-up preset
Zero or midscale dynamic reset
3-wire interface
Compact 16-lead TSSOP package
APPLICATIONS
Automatic test equipment
Instrumentation
Digitally controlled calibration
Industrial control PLCs
Programmable attenuator
PRODUCT OVERVIEW
The AD5545/AD5555 are 16-bit/14-bit, current-output, digital-
to-analog converters designed to operate from a 4.5 V to 5.5 V
supply range.
An external reference is needed to establish the full-scale
output-current. An internal feedback resistor (RFB) enhances
the resistance and temperature tracking when combined
with an external op amp to complete the I-to-V conversion.
A serial data interface offers high speed, 3-wire microcontroller
compatible inputs using serial data in (SDI), clock (CLK), and
chip select (CS). Additional LDAC function allows
simultaneous update operation. The internal reset logic allows
power-on preset and dynamic reset at either zero or midscale,
depending on the state of the MSB pin.
The AD5545/AD5555 are packaged in the compact TSSOP-16
package and can be operated from −40°C to +85°C.
Dual, Current-Output,
Serial-Input, 16-/14-Bit DACs
AD5545/AD5555
FUNCTIONAL BLOCK DIAGRAM
VREFA VREFB
16 OR 14
VDD
D0..DX
SDI INPUT
REGISTER R
DAC A
REGISTER R
CS
CLK
EN
DAC A
B
ADDR
DECODE
DGND
INPUT
REGISTER R
DAC B
REGISTER R
POWER-
ON
RESET
RS MSB
LDAC
Figure 1.
DAC A
DAC B
RFBA
IOUTA
AGNDA
RFBB
IOUTB
AGNDB
AD5545/
AD5555
02918-0-001
Rev. I
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2003–2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
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AD5545 Даташит, Описание, Даташиты
AD5545/AD5555
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Product Overview............................................................................. 1
Functional Block Diagram .............................................................. 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Electrical Characteristics ............................................................. 3
Timing Diagrams.......................................................................... 4
Absolute Maximum Ratings............................................................ 5
ESD Caution.................................................................................. 5
Pin Configuration and Function Descriptions............................. 6
Typical Performance Characteristics ............................................. 7
Theory of Operation ........................................................................ 9
Digital-to-Analog Converter ...................................................... 9
Serial Data Interface................................................................... 10
Power-Up Sequence ................................................................... 11
REVISION HISTORY
1/16—Rev. H to Rev. I
Deleted Positive Voltage Output Section and Figure 22;
Renumbered Section ...................................................................... 12
Changes to Ordering Guide .......................................................... 23
4/14—Rev. G to Rev. H
Change to Interface Timing Parameter, Table 1 ........................... 3
4/13—Rev. F to Rev. G
Changes to Product Overview Section.......................................... 1
Changes to Ordering Guide .......................................................... 23
2/13—Rev. E to Rev. F
Change to VDD Pin Description, Table 3 ..................................... 6
Changed ADA4899 to ADA4899-1, Table 12 ............................. 16
Changes to Ordering Guide .......................................................... 23
12/11—Rev. D to Rev. E
Added Figure 13; Renumbered Sequentially ................................ 8
5/11—Rev. C to Rev. D
Added Evaluation Board for the AD5545 Section, System
Demonstration Platform Section, and Operating the Evaluation
Board Section .................................................................................. 17
Added Figure 25 and Figure 26; Renumbered Sequentially ..... 17
Added Evaluation Board Schematics Section, Figure 27 .......... 18
Added Figure 28.............................................................................. 19
Data Sheet
Layout and Power Supply Bypassing ....................................... 11
Grounding ................................................................................... 11
Applications Information .............................................................. 12
Stability ........................................................................................ 12
Bipolar Output............................................................................ 12
Programmable Current Source ................................................ 13
DAC with Programmable Input Reference Range................ 14
Reference Selection .................................................................... 15
Amplifier Selection .................................................................... 15
Evaluation Board for the AD5545................................................ 17
System Demonstration Platform.............................................. 17
Operating the Evaluation Board .............................................. 17
Evaluation Board Schematics ................................................... 18
Evaluation Board Layout........................................................... 21
Outline Dimensions ....................................................................... 23
Ordering Guide .......................................................................... 23
Added Figure 29 ............................................................................. 20
Added Evaluation Board Layout Section, Figure 30, and
Figure 31, ......................................................................................... 21
Added Figure 32 ............................................................................. 22
Changes to Ordering Guide .......................................................... 23
3/11—Rev. B to Rev. C
Change to Equation 4, Bipolar Output Section.......................... 12
4/10—Rev. A to Rev. B
Changes to 2Q Multiplying Reference Input .................................1
Changes to AC Characteristics and Endnote 3 in Table 1 ...........4
Changes to Figure 13 and Figure 15 ...............................................8
Added Reference Selection Section, Amplifier Selection Section,
and Table 10 .................................................................................... 15
Added Table 11 and Table 12 ........................................................ 16
Changes to Ordering Guide .......................................................... 17
9/09—Rev. 0 to Rev. A
Changes to Features Section ............................................................1
Changes to Static Performance, Relative Accuracy, AD5545C
Parameter, Table 1 .............................................................................3
Moved ESD Caution..........................................................................5
Changes to Ordering Guide .......................................................... 16
7/03—Revision 0: Initial Version
Rev. I | Page 2 of 23
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AD5545 Даташит, Описание, Даташиты
Data Sheet
AD5545/AD5555
SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
VDD = 5 V ± 10%, IOUT = virtual GND, GND = 0 V, VREF = 10 V, TA = full operating temperature range, unless otherwise noted.
Table 1.
Parameter
STATIC PERFORMANCE1
Resolution
Relative Accuracy
Differential Nonlinearity
Output Leakage Current
Full-Scale Gain Error
Full-Scale Temperature Coefficient2
REFERENCE INPUT
VREF Range
Input Resistance
Input Capacitance2
ANALOG OUTPUT
Output Current
Output Capacitance2
LOGIC INPUTS AND OUTPUT
Logic Input Low Voltage
Logic Input High Voltage
Input Leakage Current
Input Capacitance2
INTERFACE TIMING2, 4
Clock Input Frequency
Clock Width High
Clock Width Low
CS to Clock Setup
Clock to CS Hold
Data Setup
Data Hold
LDAC Setup
Hold
LDAC Width
SUPPLY CHARACTERISTICS
Power Supply Range
Positive Supply Current
Power Dissipation
Power Supply Sensitivity
Symbol Conditions
N
INL
DNL
IOUT
GFSE
TCVFS
AD5545, 1 LSB = VREF/216 = 153 µV when VREF = 10 V
AD5555, 1 LSB = VREF/214 = 610 µV when VREF = 10 V
AD5545B
AD5555C
AD5545C
Monotonic
Data = 0x0000, TA = 25°C
Data = 0x0000, TA = TA Max
Data = full scale
VREF
RREF
CREF
IOUT Data = full scale
COUT Code dependent
VIL
VIH
IIL
CIL
fCLK
tCH
tCL
tCSS
tCSH
tDS
tDH
tLDS
tLDH
tLDAC
VDD range
IDD
PDISS
PSS
Logic inputs = 0 V
Logic inputs = 0 V
∆VDD = ±5%
Min Typ Max Unit
16
14
±2
±1
±1
±1
10
20
±1 ±4
1
Bits
Bits
LSB
LSB
LSB
LSB
nA
nA
mV
ppm/°C
–12
5
5
+12 V
kΩ3
pF
2 mA
200 pF
0.8 V
2.4 V
10 µA
10 pF
50 MHz
10 ns
10 ns
0 ns
10 ns
5 ns
10 ns
5 ns
10 ns
10 ns
4.5 5.5 V
10 µA
0.055 mW
0.006 %/%
Rev. I | Page 3 of 23
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